公开(公告)号：EP3890088B1

公开(公告)日：2025-01-01

申请号：EP19888809.1

申请日：2019-11-25

Inventor： HOSOKAWA, Takafumi ,  HOSOKAWA, Takashi ,  KOBAYASHI, Kyohei ,  OGAWA, Shuji

IPC: H01M10/0587 ,  H01M50/46 ,  H01M10/04 ,  H01M10/0525 ,  H01M50/489 ,  H01M50/103 ,  H01M50/409

公开(公告)号：EP4468501A1

公开(公告)日：2024-11-27

申请号：EP23747358.2

申请日：2023-01-26

Applicant: LG Chem, Ltd.

Inventor： LEE, A-Young ,  LEE, Joo-Sung ,  KIM, Bong-Tae ,  MUN, Sung Cik ,  LEE, Ji-Myeong ,  HAN, Sung-Jae

IPC: H01M50/409 ,  H01M50/403 ,  H01M50/446 ,  H01M50/449 ,  H01M10/052

Abstract: Provided is a separator for an electrochemical device, including a polymer porous support, and an inorganic composite porous layer formed on at least one surface of the porous support, wherein the inorganic composite porous layer includes a binder polymer and an inorganic filler, the binder polymer includes a first binder polymer and a second binder polymer, the first binder polymer is an amorphous polymer having a glass transition temperature (Tg) of 180°C or higher, and the second binder polymer is a polyvinylidene fluoride-based copolymer.

公开(公告)号：EP4394968A1

公开(公告)日：2024-07-03

申请号：EP23866698.6

申请日：2023-11-13

Applicant: Ningde Amperex Technology Limited

Inventor： LI, Yuanzhou

IPC: H01M10/04 ,  H01M50/463 ,  H01M50/409

Abstract: This application provides a battery cell, a secondary battery, and an electric device, and relates to the field of battery technologies. The battery cell includes an electrode assembly, where the electrode assembly includes a first separator, a second separator, and multiple electrode plates stacked. The multiple electrode plates include two outer electrode plates located at two ends and multiple inner electrode plates located between the two outer electrode plates. The first separator is disposed between the outer electrode plate and the inner electrode plate adjacent to the outer electrode plate; and the second separator is disposed between adjacent two of the inner electrode plates; where thickness of the first separator is greater than thickness of the second separator. Compared to the thickness of the separator in the middle region of the electrode assembly, the thickness of the separator at the end of the electrode assembly is increased, which makes the first separator stronger and less prone to puncture, reducing the short-circuit risk of the battery cell and improving the safety performance of the battery cell. The larger thickness of the first separator can also increase the pass rate of the high-voltage test and impact test of the battery cell, reduce the defect rate of the battery cell, and enhance the reliability of the battery cell.

公开(公告)号：EP4064404B1

公开(公告)日：2024-05-29

申请号：EP21189447.2

申请日：2021-08-03

IPC: H01M10/0525 ,  H01M50/403 ,  H01M50/409 ,  H01M50/414 ,  H01M50/426 ,  H01M50/449 ,  H01M50/491 ,  H01M50/494

CPC classification number: H01M50/409 ,  H01M50/414 ,  H01M50/426 ,  H01M50/449 ,  H01M50/403 ,  H01M50/491 ,  H01M50/494 ,  H01M10/0525 ,  Y02E60/10

公开(公告)号：EP4307410A1

公开(公告)日：2024-01-17

申请号：EP22784877.7

申请日：2022-04-04

Applicant: Seoul National University R & DB Foundation

Inventor： CHOI, Jang Wook ,  LEE, Taegeun

IPC: H01M4/62 ,  H01M50/409 ,  H01M4/13 ,  H01M10/0562 ,  H01M10/052

Abstract: The present disclosure relates to a binder for an all-solid-state lithium secondary battery wherein the carboxyl group of mercaptocarboxylic acid is grafted in a butadiene polymer, wherein a molar ratio of the carboxyl group to the butadiene polymer is 0.1-30:100, a binder for an all-solid-state lithium secondary battery containing the same, an all-solid-state lithium secondary battery electrode composite containing the same, a separator in an all-solid-state lithium secondary battery containing the same, and an all-solid-state lithium secondary battery containing the same. Since the binder for an all-solid-state lithium secondary battery of the present disclosure can satisfy stability, solubility, polarity and adhesive property at the same time, it can significantly accelerate the commercialization of an all-solid-state battery based on a wet process.

公开(公告)号：EP3896757B1

公开(公告)日：2023-11-22

申请号：EP19909055.6

申请日：2019-12-17

Inventor： LI, Xiang ,  WANG, Bin ,  SHAO, Ying

IPC: H01M4/134 ,  H01M4/1395 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/409 ,  H01M4/02

公开(公告)号：EP4243181A3

公开(公告)日：2023-11-15

申请号：EP23182781.7

申请日：2021-04-13

Applicant: Asahi Kasei Kabushiki Kaisha

Inventor： ZHANG, Xun ,  MATSUYAMA, Hayato ,  NAKAO, Tetsushi

IPC: C08J9/26 ,  H01G11/52 ,  H01G11/84 ,  H01M50/409 ,  C08J5/18 ,  H01G9/02 ,  H01M50/403 ,  H01M50/417 ,  H01M50/489

Abstract: A separator for a power storage device comprising a microporous membrane, wherein:
the microporous membrane comprises polyethylene and polypropylene, and
in X-ray diffraction (XRD) analysis of the microporous membrane, the crystallite size of the polyethylene, determined as described in the specification, is 15 nm to 40 nm and the crystallite size of the polypropylene, determined as described in the specification, is 10 nm to 50 nm.

公开(公告)号：EP4270430A1

公开(公告)日：2023-11-01

申请号：EP21915124.8

申请日：2021-12-20

Applicant: DKS Co. Ltd.

Inventor： OKUHARA, Junshi ,  KANEKO, Fumiya

IPC: H01G11/06 ,  H01G11/56 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0568 ,  H01M50/409

Abstract: Techniques relating to an electrolyte having high ion conductivity and high strength are provided. The electrolyte includes an ionic liquid, an inorganic oxide, and a binder, wherein the binder is formed from raw materials that are a polycarbonate polyol and a polyisocyanate, and the binder includes, at an end, at least one functional group selected from the group consisting of a trialkoxysilyl group having 1 to 4 carbon atoms, an epoxy group, and an oxetanyl group.

公开(公告)号：EP4256645A1

公开(公告)日：2023-10-11

申请号：EP21904180.3

申请日：2021-12-06

Applicant: Hollingsworth & Vose Company

Inventor： KODIMOLE MAHADEVAPPA, Mahadevaswamy ,  BASAVARAJU, Girisha ,  MARCHIGOWDA, Krishna ,  PATCHIGOLLA VENKATA, Kameswara, Rao ,  ANANTHARAMAIAH, Nagendra ,  MADUVINAKODI NARASIMHAMURTHY, Ganesha ,  MRUTHUNJAYAPPA, Manu, Patel

IPC: H01M50/403 ,  H01M50/40 ,  H01M50/409 ,  H01M10/12

公开(公告)号：EP4253433A1

公开(公告)日：2023-10-04

申请号：EP21898005.0

申请日：2021-11-24

Applicant: Zeon Corporation

Inventor： KITAZAWA Yuzo ,  MATSUNO Hirohiko

IPC: C08F220/06 ,  C08F220/26 ,  C08F220/44 ,  H01M4/02 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M50/409

Abstract: Provided is a binder for a secondary battery functional layer that can form a functional layer having excellent heat shrinkage resistance and electrolyte solution affinity. The binder for a secondary battery functional layer contains a particulate polymer including a cyano group-containing monomer unit, a cyclic ether-containing monomer unit, and a carboxyl group-containing monomer unit. The proportional content of the cyclic ether-containing monomer unit in the particulate polymer is 5 mass% or more.